/* ============================================================
   OSCAR LEUNG — PORTFOLIO
   Dark professional theme with modern motion. Employer-first.
   ============================================================ */

/* ===== RESET ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

/* ===== TOKENS ===== */
:root {
  /* The design is committed dark: tell the browser so native form controls,
     scrollbars and the iframe UA styles render dark instead of glaring white. */
  color-scheme: dark;
  --bg:           #070b18;
  --bg-alt:       #0b1023;
  --bg-card:      #111827;
  --bg-card-hi:   #161f33;
  --border:       #1a2540;
  --border-lit:   rgba(56,189,248,.32);
  --accent:       #38bdf8;
  --accent-2:     #818cf8;
  --accent-3:     #f472b6;
  --accent-hi:    #7dd3fc;
  --accent-lo:    rgba(56,189,248,.08);
  --green:        #4ade80;
  --text:         #e6ecf5;
  --text-muted:   #94a3b8;
  --text-dim:     #7d8ba6;
  --font:         'Inter', system-ui, -apple-system, sans-serif;
  --mono:         'Fira Code', 'Courier New', monospace;
  --r:            12px;
  --r-sm:         8px;
  --t:            .25s cubic-bezier(.2,.7,.3,1);
  --t-slow:       .55s cubic-bezier(.2,.7,.3,1);
  --shadow:       0 8px 32px rgba(0,0,0,.45);
  --glow:         0 0 28px rgba(56,189,248,.18), 0 8px 32px rgba(0,0,0,.4);
  --gradient:     linear-gradient(135deg, var(--accent), var(--accent-2) 55%, var(--accent-3));
}

/* ===== GLOBAL ===== */
html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; }
body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  overflow-x: hidden;
  position: relative;
}
/* subtle global grain — adds depth without being noisy */
body::before {
  content: '';
  position: fixed; inset: 0;
  pointer-events: none;
  z-index: 1000;
  opacity: .035;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='160' height='160'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='2' stitchTiles='stitch'/><feColorMatrix values='0 0 0 0 1  0 0 0 0 1  0 0 0 0 1  0 0 0 .6 0'/></filter><rect width='100%25' height='100%25' filter='url(%23n)'/></svg>");
}
a { color: inherit; text-decoration: none; }
strong { color: var(--text); font-weight: 600; }
::selection { background: rgba(56,189,248,.32); color: #fff; }

/* Custom scrollbar */
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb {
  background: linear-gradient(var(--accent), var(--accent-2));
  border-radius: 8px; border: 2px solid var(--bg);
}
::-webkit-scrollbar-thumb:hover { background: linear-gradient(var(--accent-hi), var(--accent-2)); }
html { scrollbar-color: var(--accent) var(--bg); }

/* Mouse-tracked spotlight gradient — used by cards via background-image.
   JS sets --mx / --my; defaults keep the gradient off-screen. */

/* ===== NAV ===== */
.nav {
  position: fixed; inset: 0 0 auto;
  z-index: 200;
  padding: 0 2rem;
  transition: background var(--t), box-shadow var(--t), backdrop-filter var(--t);
}
.nav.scrolled {
  background: rgba(7,11,24,.78);
  backdrop-filter: blur(16px) saturate(140%);
  -webkit-backdrop-filter: blur(16px) saturate(140%);
  box-shadow: 0 1px 0 var(--border), 0 10px 30px rgba(0,0,0,.25);
}
.nav__inner {
  max-width: 1120px; margin: 0 auto;
  height: 64px; display: flex; align-items: center; justify-content: space-between;
}
.nav__logo {
  font-family: var(--mono); font-size: 1.15rem; font-weight: 500;
  color: var(--accent); letter-spacing: .04em;
  transition: filter var(--t);
}
.nav__logo:hover { filter: drop-shadow(0 0 8px rgba(56,189,248,.5)); }
.nav__logo-dot { color: var(--text-dim); }
.nav__links { display: flex; gap: 2rem; list-style: none; }
.nav__link {
  font-size: .85rem; font-weight: 500; color: var(--text-muted);
  transition: color var(--t); position: relative; padding-bottom: 2px;
}
.nav__link::after {
  content: ''; position: absolute; bottom: -3px; left: 0;
  width: 0; height: 2px; background: var(--gradient); border-radius: 2px;
  transition: width var(--t);
}
.nav__link:hover, .nav__link.active { color: var(--accent); }
.nav__link:hover::after, .nav__link.active::after { width: 100%; }
.nav__link.contact-cta {
  color: var(--accent); border: 1px solid var(--border-lit);
  padding: .3rem .8rem; border-radius: var(--r-sm);
}
.nav__link.contact-cta:hover { background: var(--accent-lo); box-shadow: 0 0 12px rgba(56,189,248,.2); }
.nav__link.contact-cta::after { display: none; }
.nav__hamburger {
  display: none; flex-direction: column; gap: 5px;
  background: none; border: none; cursor: pointer; padding: 4px;
}
.nav__hamburger span {
  display: block; width: 22px; height: 2px;
  background: var(--text); border-radius: 2px; transition: var(--t);
}
.nav__hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav__hamburger.open span:nth-child(2) { opacity: 0; }
.nav__hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ===== HERO ===== */
.hero {
  min-height: 100vh; display: flex; align-items: center; justify-content: center;
  position: relative; overflow: hidden; padding: 80px 2rem 3rem;
}
/* Animated aurora blobs — pure CSS, no JS */
.hero__bg {
  position: absolute; inset: 0;
  background:
    radial-gradient(ellipse 70% 55% at 15% 45%, rgba(56,189,248,.10) 0%, transparent 55%),
    radial-gradient(ellipse 55% 45% at 85% 65%, rgba(129,140,248,.08) 0%, transparent 55%);
}
.hero__bg::before,
.hero__bg::after {
  content: '';
  position: absolute;
  border-radius: 50%;
  filter: blur(70px);
  opacity: .55;
  mix-blend-mode: screen;
  pointer-events: none;
}
.hero__bg::before {
  width: 520px; height: 520px;
  background: radial-gradient(circle, rgba(56,189,248,.45), transparent 65%);
  top: -120px; left: -120px;
  animation: float1 18s ease-in-out infinite;
}
.hero__bg::after {
  width: 480px; height: 480px;
  background: radial-gradient(circle, rgba(244,114,182,.30), transparent 65%);
  bottom: -140px; right: -120px;
  animation: float2 22s ease-in-out infinite;
}
@keyframes float1 {
  0%, 100% { transform: translate(0,0)   scale(1);   }
  33%      { transform: translate(80px,40px)  scale(1.08); }
  66%      { transform: translate(-40px,80px) scale(.94);  }
}
@keyframes float2 {
  0%, 100% { transform: translate(0,0)   scale(1);   }
  40%      { transform: translate(-60px,-50px) scale(1.05); }
  75%      { transform: translate(40px,-30px)  scale(.97);  }
}

/* Hero dot grid */
.hero::before {
  content: ''; position: absolute; inset: 0;
  background-image: radial-gradient(circle, rgba(56,189,248,.10) 1px, transparent 1px);
  background-size: 36px 36px;
  mask-image: radial-gradient(ellipse 85% 85% at 50% 50%, black 20%, transparent 100%);
  pointer-events: none;
}
.hero__content { position: relative; z-index: 1; text-align: center; max-width: 800px; }
.hero__greeting {
  font-family: var(--mono); font-size: .9rem; color: var(--accent);
  letter-spacing: .12em; margin-bottom: .5rem;
}
.hero__name {
  font-size: clamp(3.2rem, 9vw, 6rem); font-weight: 700;
  letter-spacing: -.025em; line-height: 1.05;
  background: linear-gradient(120deg, #fff 0%, var(--accent) 45%, var(--accent-2) 75%, #fff 100%);
  background-size: 200% 100%;
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
  margin-bottom: 1.1rem;
  animation: shimmer 7s ease-in-out infinite;
}
@keyframes shimmer {
  0%, 100% { background-position: 0% 50%; }
  50%      { background-position: 100% 50%; }
}
.hero__role {
  font-size: clamp(1rem, 2.5vw, 1.4rem); color: var(--text-muted);
  margin-bottom: 1.25rem; min-height: 2.2em;
  display: flex; align-items: center; justify-content: center;
}
.hero__role-typed { color: var(--accent); font-weight: 600; }
.hero__cursor { color: var(--accent); animation: blink 1s step-end infinite; margin-left: 1px; }
@keyframes blink { 50% { opacity: 0; } }
.hero__subtitle {
  font-size: 1.05rem; color: var(--text-muted); line-height: 1.75;
  max-width: 620px; margin: 0 auto 2.25rem;
}
/* Three actions: one filled primary, outline + ghost as secondaries.
   Slightly larger than base .btn so the trimmed-down row doesn't look
   sparse at desktop widths, and every target clears 44px (WCAG 2.5.5). */
.hero__ctas { display: flex; gap: 1rem; justify-content: center; flex-wrap: wrap; margin-bottom: 1.75rem; }
.hero__ctas .btn { padding: .85rem 1.9rem; font-size: .92rem; min-height: 44px; }
.hero__ctas .btn--ghost { color: var(--text); }
.hero__available {
  display: inline-flex; align-items: center; gap: .55rem;
  font-size: .82rem; color: var(--text-muted);
  background: rgba(74,222,128,.05); border: 1px solid rgba(74,222,128,.22);
  padding: .4rem 1.1rem; border-radius: 100px;
  backdrop-filter: blur(4px);
}
.hero__dot {
  width: 8px; height: 8px; border-radius: 50%; flex-shrink: 0;
  background: var(--green); box-shadow: 0 0 8px var(--green);
  animation: pulse 2.5s ease infinite;
}
@keyframes pulse { 0%,100% { opacity: 1; transform: scale(1); } 50% { opacity: .6; transform: scale(.85); } }
.hero__scroll-hint { position: absolute; bottom: 2rem; left: 50%; transform: translateX(-50%); }
.hero__scroll-line {
  width: 1px; height: 52px;
  background: linear-gradient(to bottom, rgba(56,189,248,.6), transparent);
  animation: scrollAnim 2.2s ease-in-out infinite;
}
@keyframes scrollAnim {
  0%   { transform: scaleY(0); transform-origin: top; opacity: 0; }
  30%  { opacity: 1; }
  60%  { transform: scaleY(1); transform-origin: top; }
  61%  { transform: scaleY(1); transform-origin: bottom; }
  100% { transform: scaleY(0); transform-origin: bottom; opacity: 0; }
}

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex; align-items: center; gap: .5rem;
  padding: .72rem 1.6rem; border-radius: var(--r-sm);
  font-size: .88rem; font-weight: 600; cursor: pointer;
  transition: transform var(--t), background var(--t), color var(--t),
              border-color var(--t), box-shadow var(--t);
  border: 2px solid transparent; white-space: nowrap;
  position: relative; overflow: hidden; isolation: isolate;
  /* <button> otherwise picks up the UA buttonface background and system font,
     so the same class rendered differently on a button than on a link. */
  background: transparent; font-family: inherit;
}
/* Shine sweep on hover */
.btn::after {
  content: '';
  position: absolute; top: 0; left: -120%;
  width: 60%; height: 100%;
  background: linear-gradient(120deg, transparent 0%, rgba(255,255,255,.18) 50%, transparent 100%);
  transform: skewX(-20deg);
  transition: left var(--t-slow);
  pointer-events: none;
}
.btn:hover::after { left: 130%; }
.btn--primary { background: var(--accent); color: #060b16; border-color: var(--accent); }
.btn--primary:hover { background: var(--accent-hi); border-color: var(--accent-hi); transform: translateY(-2px); box-shadow: var(--glow); }
.btn--outline { border-color: var(--border-lit); color: var(--accent); background: rgba(56,189,248,.03); }
.btn--outline:hover { background: var(--accent-lo); transform: translateY(-2px); box-shadow: 0 6px 20px rgba(56,189,248,.15); }
.btn--ghost { border-color: var(--border); color: var(--text-muted); }
.btn--ghost:hover { border-color: var(--border-lit); color: var(--accent); transform: translateY(-2px); }
.btn--sm { padding: .5rem 1.1rem; font-size: .82rem; }
.btn--full { width: 100%; justify-content: center; }

/* ===== LAYOUT ===== */
.section { padding: 5.5rem 2rem; position: relative; }
.section--alt { background: var(--bg-alt); }
/* Soft top accent line on alt sections */
.section--alt::before {
  content: '';
  position: absolute; top: 0; left: 10%; right: 10%; height: 1px;
  background: linear-gradient(90deg, transparent, var(--border-lit), transparent);
}
.container { max-width: 1120px; margin: 0 auto; }

/* Section header */
.section__header { margin-bottom: 2.5rem; }
.section__eyebrow {
  font-family: var(--mono); font-size: .78rem; color: var(--accent);
  letter-spacing: .14em; text-transform: uppercase; margin-bottom: .4rem;
}
.section__title {
  font-size: clamp(1.6rem, 4vw, 2.2rem); font-weight: 700;
  position: relative; display: inline-block;
  text-wrap: balance;
}
.section__title::after {
  content: ''; position: absolute; bottom: -7px; left: 0;
  width: 40px; height: 3px;
  background: var(--gradient);
  border-radius: 2px;
  box-shadow: 0 0 12px rgba(56,189,248,.4);
}

/* ===== SCROLL REVEAL ===== */
.fade-up { opacity: 0; transform: translateY(18px); animation: fadeUp .75s ease forwards; }
.fade-up:nth-child(1) { animation-delay: .1s; }
.fade-up:nth-child(2) { animation-delay: .2s; }
.fade-up:nth-child(3) { animation-delay: .32s; }
.fade-up:nth-child(4) { animation-delay: .44s; }
.fade-up:nth-child(5) { animation-delay: .56s; }
.fade-up:nth-child(6) { animation-delay: .68s; }
@keyframes fadeUp { to { opacity: 1; transform: none; } }
/* Gated on html.js: only hide these when the script that reveals them is
   actually running. Without the gate, one JS error blanks the whole page. */
html.js .fade-in { opacity: 0; transform: translateY(22px); transition: opacity .65s ease, transform .65s ease; }
html.js .fade-in.visible { opacity: 1; transform: none; }

/* ===== ABOUT ===== */
.about__grid {
  display: grid; grid-template-columns: 1fr 320px; gap: 3.5rem; align-items: start;
}
.about__text p { color: var(--text-muted); margin-bottom: 1rem; font-size: .97rem; }
.about__badges { display: flex; flex-wrap: wrap; gap: .5rem; margin-top: 1.5rem; }
.badge {
  display: inline-flex; align-items: center; gap: .35rem;
  padding: .32rem .85rem; border-radius: 100px;
  font-size: .78rem; font-weight: 500;
  transition: transform var(--t);
}
.badge:hover { transform: translateY(-1px); }
.badge--green { background: rgba(74,222,128,.08); border: 1px solid rgba(74,222,128,.22); color: var(--green); }
.badge--blue  { background: var(--accent-lo); border: 1px solid var(--border-lit); color: var(--accent-hi); }

/* Stats */
.stats-grid { display: grid; grid-template-columns: 1fr 1fr; gap: .65rem; margin-bottom: 1rem; }
.stat-card {
  background-color: var(--bg-card);
  background-image: radial-gradient(360px circle at var(--mx, -200px) var(--my, -200px),
                    rgba(56,189,248,.12), transparent 45%);
  border: 1px solid var(--border);
  border-radius: var(--r); padding: 1.1rem .9rem; text-align: center;
  transition: transform var(--t), border-color var(--t), background-color var(--t);
  position: relative; overflow: hidden;
}
.stat-card::before {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(135deg, rgba(56,189,248,.06), transparent 60%);
  opacity: 0; transition: opacity var(--t);
  pointer-events: none;
}
.stat-card:hover { transform: translateY(-3px); border-color: var(--border-lit); }
.stat-card:hover::before { opacity: 1; }
.stat-card > * { position: relative; }
.stat-card__num {
  display: block; font-size: 1.65rem; font-weight: 700;
  background: var(--gradient);
  -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
  line-height: 1.1;
}
.stat-card__label { display: block; font-size: .7rem; color: var(--text-dim); margin-top: .25rem; line-height: 1.35; }

/* Certs box */
.certs-box {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--r); padding: 1.1rem 1.2rem;
}
.certs-box__title { font-size: .8rem; font-weight: 600; color: var(--text-dim); text-transform: uppercase; letter-spacing: .06em; margin-bottom: .75rem; }
.certs-list { list-style: none; display: flex; flex-direction: column; gap: .55rem; }
.certs-list li { display: flex; align-items: baseline; gap: .5rem; font-size: .85rem; color: var(--text-muted); }
.cert-icon { font-size: .9rem; flex-shrink: 0; }
.cert-meta { font-size: .75rem; color: var(--text-dim); margin-left: auto; white-space: nowrap; }

/* ===== SKILLS ===== */
.skills__grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: 1.25rem; }
.skill-card {
  background-color: var(--bg-card);
  background-image: radial-gradient(440px circle at var(--mx, -200px) var(--my, -200px),
                    rgba(56,189,248,.12), transparent 45%);
  border: 1px solid var(--border);
  border-radius: var(--r); padding: 1.6rem;
  transition: transform var(--t), border-color var(--t), box-shadow var(--t), background-color var(--t);
  position: relative;
}
/* Animated gradient border on hover (using a pseudo-element) */
.skill-card::before {
  content: ''; position: absolute; inset: -1px;
  border-radius: inherit; padding: 1px;
  background: var(--gradient);
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor; mask-composite: exclude;
  opacity: 0; transition: opacity var(--t);
  pointer-events: none;
}
.skill-card:hover { transform: translateY(-5px); background-color: var(--bg-card-hi); box-shadow: var(--glow); }
.skill-card:hover::before { opacity: 1; }
.skill-card__icon {
  font-size: 1.6rem; margin-bottom: .6rem; display: inline-block;
  transition: transform var(--t);
}
.skill-card:hover .skill-card__icon { transform: scale(1.12) rotate(-4deg); }
.skill-card__title { font-size: .9rem; font-weight: 600; margin-bottom: .85rem; }

/* Tags */
.tags { display: flex; flex-wrap: wrap; gap: .4rem; }
.tag {
  display: inline-block; padding: .22rem .6rem; border-radius: 100px;
  font-size: .76rem; font-weight: 500;
  background: var(--accent-lo); color: var(--accent); border: 1px solid rgba(56,189,248,.16);
  transition: background var(--t), border-color var(--t), transform var(--t);
}
.tag:hover { background: rgba(56,189,248,.15); border-color: var(--border-lit); transform: translateY(-1px); }
.tag--accent { background: rgba(56,189,248,.12); color: var(--accent-hi); border-color: rgba(56,189,248,.2); }

/* ===== FEATURED PROJECT ===== */
.featured-project {
  background: linear-gradient(135deg, var(--bg-card) 0%, var(--bg-card-hi) 100%);
  border: 1px solid var(--border-lit);
  border-radius: var(--r); padding: 2.25rem; margin-bottom: 1.75rem;
  position: relative; overflow: hidden;
  box-shadow: 0 12px 40px rgba(0,0,0,.3);
}
.featured-project::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 2px;
  background: var(--gradient);
}
/* Glow orb in the corner */
.featured-project::after {
  content: '';
  position: absolute; top: -120px; right: -120px;
  width: 320px; height: 320px;
  background: radial-gradient(circle, rgba(56,189,248,.18), transparent 65%);
  filter: blur(40px);
  pointer-events: none;
}
.featured-project > * { position: relative; z-index: 1; }
.featured-project__label {
  font-family: var(--mono); font-size: .75rem; color: var(--accent);
  letter-spacing: .1em; text-transform: uppercase; margin-bottom: .85rem;
}
.featured-project__title {
  font-size: 1.5rem; font-weight: 700; margin-bottom: .85rem;
  background: linear-gradient(120deg, #fff, var(--accent-hi));
  -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
}
.featured-project__desc {
  color: var(--text-muted); font-size: .95rem; line-height: 1.75;
  max-width: 780px; margin-bottom: 1.1rem;
}
.featured-project__bullets { display: flex; flex-direction: column; gap: .4rem; margin-bottom: 1.25rem; }
.bullet { display: flex; align-items: baseline; gap: .55rem; font-size: .88rem; color: var(--text-muted); }
.bullet span { color: var(--accent); font-size: .7rem; flex-shrink: 0; }
.featured-project__tags { margin-bottom: 1.5rem; }
.featured-project__links { display: flex; gap: .75rem; }

/* ===== PROJECT GRID ===== */
.projects__grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(300px, 100%), 1fr)); gap: 1.25rem; }
.project-card {
  background-color: var(--bg-card);
  background-image: radial-gradient(440px circle at var(--mx, -200px) var(--my, -200px),
                    rgba(56,189,248,.12), transparent 45%);
  border: 1px solid var(--border);
  border-radius: var(--r); padding: 1.6rem;
  display: flex; flex-direction: column; gap: .75rem;
  transition: transform var(--t), border-color var(--t), box-shadow var(--t), background-color var(--t);
  position: relative;
}
.project-card::before {
  content: ''; position: absolute; inset: -1px;
  border-radius: inherit; padding: 1px;
  background: var(--gradient);
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor; mask-composite: exclude;
  opacity: 0; transition: opacity var(--t);
  pointer-events: none;
}
.project-card:hover { transform: translateY(-5px); background-color: var(--bg-card-hi); box-shadow: var(--glow); }
.project-card:hover::before { opacity: 1; }
.project-card__head { display: flex; align-items: center; justify-content: space-between; }
.project-card__icon { font-size: 1.8rem; transition: transform var(--t); }
.project-card:hover .project-card__icon { transform: scale(1.1) rotate(-6deg); }
.project-card__gh { color: var(--text-dim); transition: color var(--t), transform var(--t); display: flex; }
.project-card__gh:hover { color: var(--accent); transform: scale(1.15); }
.project-card__title { font-size: 1.05rem; font-weight: 700; }
.project-card__desc { color: var(--text-muted); font-size: .88rem; line-height: 1.7; flex: 1; }

/* ===== BEYOND ===== */
.beyond__grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 1.25rem; }
.beyond-card {
  background-color: var(--bg-card);
  background-image: radial-gradient(420px circle at var(--mx, -200px) var(--my, -200px),
                    rgba(56,189,248,.12), transparent 45%);
  border: 1px solid var(--border);
  border-radius: var(--r); padding: 1.6rem;
  transition: transform var(--t), border-color var(--t), background-color var(--t);
  position: relative; overflow: hidden;
}
.beyond-card::after {
  content: ''; position: absolute; inset: 0;
  background: radial-gradient(circle at 80% 0%, rgba(56,189,248,.08), transparent 50%);
  opacity: 0; transition: opacity var(--t);
  pointer-events: none;
}
.beyond-card:hover { transform: translateY(-4px); border-color: var(--border-lit); background-color: var(--bg-card-hi); }
.beyond-card:hover::after { opacity: 1; }
.beyond-card__emoji {
  font-size: 1.8rem; margin-bottom: .65rem; display: inline-block;
  transition: transform var(--t);
}
.beyond-card:hover .beyond-card__emoji { transform: scale(1.15) rotate(8deg); }
.beyond-card h3 { font-size: .95rem; font-weight: 600; margin-bottom: .5rem; }
.beyond-card p { color: var(--text-muted); font-size: .87rem; line-height: 1.65; }
.beyond-card__link { display: inline-block; margin-top: .75rem; color: var(--accent); font-size: .82rem; }
.beyond-card__link:hover { text-decoration: underline; }

/* ===== CONTACT ===== */
.contact__wrap { display: grid; grid-template-columns: 1fr 1fr; gap: 4rem; align-items: start; }
.contact__pitch { color: var(--text-muted); font-size: .95rem; line-height: 1.75; margin: 1.25rem 0 1.5rem; max-width: 480px; }
.contact__facts { list-style: none; display: flex; flex-direction: column; gap: .6rem; margin-bottom: 1.75rem; }
.contact__facts li { display: flex; align-items: center; gap: .6rem; color: var(--text-muted); font-size: .88rem; }
.contact__facts span { font-size: 1rem; }
.contact__social { display: flex; flex-direction: column; gap: .7rem; }
.social-link {
  display: inline-flex; align-items: center; gap: .55rem;
  color: var(--text-muted); font-size: .88rem;
  transition: color var(--t), transform var(--t);
  width: fit-content;
}
.social-link:hover { color: var(--accent); transform: translateX(3px); }

/* "Fastest way to reach me" callout above the form — the email is the
   primary contact route now, so it gets accent treatment and a card. */
.contact__fastest {
  font-size: .92rem; color: var(--text-muted); line-height: 1.65;
  margin-bottom: 1rem;
  padding: .85rem 1.1rem;
  background: var(--accent-lo);
  border: 1px solid var(--border-lit);
  border-left: 3px solid var(--accent);
  border-radius: var(--r-sm);
}
.contact__fastest a { color: var(--accent); }
.contact__fastest a:hover { text-decoration: underline; }
.contact__fastest strong { color: var(--accent-hi); font-weight: 600; word-break: break-all; }

/* Form */
.contact-form {
  display: flex; flex-direction: column; gap: 1rem;
  background: linear-gradient(135deg, var(--bg-card), var(--bg-card-hi));
  border: 1px solid var(--border);
  border-radius: var(--r);
  padding: 1.75rem;
  box-shadow: 0 12px 36px rgba(0,0,0,.25);
}
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.form-group { display: flex; flex-direction: column; gap: .35rem; }
.form-group label { font-size: .75rem; font-weight: 600; color: var(--text-dim); letter-spacing: .05em; text-transform: uppercase; }
.required { color: var(--accent); }
.form-group input,
.form-group textarea {
  background: var(--bg); border: 1px solid var(--border);
  border-radius: var(--r-sm); padding: .75rem .95rem;
  color: var(--text); font-family: var(--font); font-size: .9rem;
  transition: border-color var(--t), box-shadow var(--t), background var(--t);
  resize: vertical;
  -webkit-appearance: none;
}
.form-group input:hover,
.form-group textarea:hover { border-color: rgba(56,189,248,.22); }
.form-group input:focus,
.form-group textarea:focus {
  outline: none; border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(56,189,248,.15);
  background: var(--bg-card);
}
.form-group input::placeholder,
.form-group textarea::placeholder { color: var(--text-dim); }
/* Inline validation — :user-invalid only fires after the visitor has
   interacted with the field, so nothing screams red on page load. */
.form-group input:user-invalid,
.form-group textarea:user-invalid {
  border-color: #f87171;
  box-shadow: 0 0 0 3px rgba(248,113,113,.12);
}
.form-group input:user-valid:required,
.form-group textarea:user-valid:required { border-color: rgba(74,222,128,.45); }
.form-note { font-size: .77rem; color: var(--text-dim); text-align: center; margin-top: .25rem; }

/* ===== FOOTER ===== */
.footer { background: var(--bg-alt); border-top: 1px solid var(--border); padding: 2rem; position: relative; }
.footer::before {
  content: ''; position: absolute; top: -1px; left: 20%; right: 20%; height: 1px;
  background: linear-gradient(90deg, transparent, var(--border-lit), transparent);
}
.footer .container { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 1rem; }
.footer__copy { color: var(--text-dim); font-size: .8rem; }
.footer__nav { display: flex; gap: 1.5rem; flex-wrap: wrap; }
.footer__nav a { font-size: .8rem; color: var(--text-dim); transition: color var(--t); }
.footer__nav a:hover { color: var(--accent); }
.footer__divider { color: var(--border); font-size: .8rem; }
.footer__alt { color: var(--text-dim) !important; font-size: .78rem; }
.footer__alt:hover { color: var(--accent) !important; opacity: 1; }

/* CI status badges — bare shields.io <img>s dropped in by the content pass */
img[src*="img.shields.io"] {
  display: inline-block; height: 20px; width: auto;
  vertical-align: middle; border-radius: 4px;
}
.featured-project__links a:not(.btn) { display: inline-flex; align-items: center; }
.project-card__desc img[src*="img.shields.io"] { margin-top: .25rem; }

/* ===== TIMELINE / EXPERIENCE ===== */
#experience .timeline {
  position: relative;
  padding-left: 2.25rem;
  max-width: 860px;
  margin: 0 auto;
}
#experience .timeline::before {
  content: '';
  position: absolute;
  left: 0;
  top: .4rem;
  bottom: .4rem;
  width: 2px;
  background: linear-gradient(to bottom, var(--accent), var(--accent-2) 50%, rgba(56,189,248,.08));
  border-radius: 2px;
}
#experience .timeline__item {
  position: relative;
  padding: 0 0 2.75rem 2rem;
}
#experience .timeline__item:last-child { padding-bottom: 0; }
.timeline__dot {
  position: absolute;
  left: -2.55rem;
  top: .35rem;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 4px rgba(56,189,248,.15), 0 0 14px rgba(56,189,248,.4);
  transition: transform var(--t), box-shadow var(--t);
}
.timeline__item:hover .timeline__dot {
  transform: scale(1.2);
  box-shadow: 0 0 0 5px rgba(56,189,248,.22), 0 0 22px rgba(56,189,248,.6);
}
.timeline__content {
  background-color: var(--bg-card);
  background-image: radial-gradient(440px circle at var(--mx, -200px) var(--my, -200px),
                    rgba(56,189,248,.12), transparent 45%);
  border: 1px solid var(--border);
  border-radius: var(--r);
  padding: 1.4rem 1.6rem;
  transition: border-color var(--t), box-shadow var(--t), background-color var(--t), transform var(--t);
  position: relative;
}
.timeline__content::before {
  /* little arrow connecting to the timeline line */
  content: '';
  position: absolute;
  left: -8px; top: .85rem;
  width: 14px; height: 14px;
  background: var(--bg-card);
  border-left: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  transform: rotate(45deg);
  transition: background var(--t), border-color var(--t);
}
.timeline__content:hover {
  border-color: var(--border-lit);
  box-shadow: var(--glow);
  background-color: var(--bg-card-hi);
  transform: translateX(4px);
}
.timeline__content:hover::before {
  background: var(--bg-card-hi);
  border-color: var(--border-lit);
}
.timeline__meta {
  display: flex;
  align-items: center;
  gap: .75rem;
  margin-bottom: .5rem;
  flex-wrap: wrap;
}
.timeline__period {
  font-size: .72rem;
  font-family: var(--mono);
  color: var(--accent);
  background: var(--accent-lo);
  border: 1px solid rgba(56,189,248,.18);
  padding: .15rem .65rem;
  border-radius: 4px;
  letter-spacing: .02em;
}
.timeline__company {
  font-size: .82rem;
  color: var(--text-muted);
  font-weight: 500;
}
.timeline__role {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: .75rem;
}
.timeline__bullets {
  list-style: none;
  padding: 0;
  margin: 0 0 1rem;
  display: flex;
  flex-direction: column;
  gap: .45rem;
}
.timeline__bullets li {
  font-size: .875rem;
  color: var(--text-muted);
  padding-left: 1.25rem;
  position: relative;
  line-height: 1.55;
}
.timeline__bullets li::before {
  content: '▸';
  position: absolute;
  left: 0;
  color: var(--accent);
  font-size: .7rem;
  top: .22rem;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 900px) {
  .about__grid { grid-template-columns: 1fr; }
  .about__right { order: -1; }
  .contact__wrap { grid-template-columns: 1fr; gap: 2.5rem; }
}
@media (max-width: 768px) {
  .nav__links {
    display: none; position: absolute; top: 64px; left: 0; right: 0;
    flex-direction: column; align-items: center; gap: 0;
    background: rgba(7,11,24,.97); backdrop-filter: blur(16px);
    padding: .75rem 0 1.25rem; border-bottom: 1px solid var(--border);
  }
  .nav__links.open { display: flex; }
  .nav__link { padding: .8rem 2rem; width: 100%; text-align: center; }
  /* padding must repeat here: .contact-cta's base padding outweighs the
     generic .nav__link mobile rule on specificity, leaving a 26px target */
  .nav__link.contact-cta { border: none; border-radius: 0; padding: .8rem 2rem; }
  .nav__hamburger { display: flex; }
  .form-row { grid-template-columns: 1fr; }
  .footer .container { flex-direction: column; text-align: center; }
}
@media (max-width: 480px) {
  .section { padding: 4rem 1.25rem; }
  .hero { padding: 80px 1.25rem 3rem; }
  .hero__ctas { flex-direction: column; align-items: center; }
  .hero__ctas .btn { width: 100%; justify-content: center; max-width: 280px; }
  /* Reclaim horizontal room on narrow phones — 1.6rem+ card padding eats
     a quarter of a 375px viewport once section padding is counted. */
  .featured-project { padding: 1.5rem 1.2rem; }
  .skill-card, .project-card, .beyond-card { padding: 1.25rem 1.1rem; }
  .contact-form { padding: 1.25rem 1.1rem; }
  .vibe-switcher { bottom: 1rem; right: 1rem; width: 44px; height: 44px; }
  #experience .timeline { padding-left: 1.5rem; }
  .timeline__content { padding: 1.1rem 1.2rem; }
  .timeline__dot { left: -1.85rem; }
}

/* ===== VIBE THEMES ===== */
/* Default ("cyan") lives in :root. These classes override the accent palette. */
:root.theme-sunset {
  --accent:     #fb923c;
  --accent-2:   #f43f5e;
  --accent-3:   #fbbf24;
  --accent-hi:  #fdba74;
  --accent-lo:  rgba(251,146,60,.08);
  --border-lit: rgba(251,146,60,.32);
  --gradient:   linear-gradient(135deg, #fb923c, #f43f5e 55%, #fbbf24);
}
:root.theme-forest {
  --accent:     #4ade80;
  --accent-2:   #14b8a6;
  --accent-3:   #84cc16;
  --accent-hi:  #86efac;
  --accent-lo:  rgba(74,222,128,.08);
  --border-lit: rgba(74,222,128,.32);
  --gradient:   linear-gradient(135deg, #4ade80, #14b8a6 55%, #84cc16);
}
:root.theme-neon {
  --accent:     #f472b6;
  --accent-2:   #a855f7;
  --accent-3:   #22d3ee;
  --accent-hi:  #f9a8d4;
  --accent-lo:  rgba(244,114,182,.08);
  --border-lit: rgba(244,114,182,.32);
  --gradient:   linear-gradient(135deg, #f472b6, #a855f7 55%, #22d3ee);
}

/* ===== VIBE SWITCHER BUTTON ===== */
.vibe-switcher {
  position: fixed;
  bottom: 1.5rem; right: 1.5rem;
  z-index: 300;
  width: 48px; height: 48px;
  border-radius: 50%;
  background: var(--bg-card);
  border: 1px solid var(--border-lit);
  color: var(--accent);
  font-size: 1.3rem;
  cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 8px 24px rgba(0,0,0,.4), 0 0 18px rgba(56,189,248,.22);
  transition: transform var(--t), box-shadow var(--t), border-color var(--t);
}
.vibe-switcher:hover {
  transform: scale(1.08) rotate(18deg);
  box-shadow: 0 12px 32px rgba(0,0,0,.45), 0 0 26px rgba(56,189,248,.35);
}
.vibe-switcher:active { transform: scale(.94); }

/* ===== TOAST ===== */
.toast {
  position: fixed;
  top: 80px; left: 50%;
  transform: translateX(-50%) translateY(-16px);
  background: var(--bg-card);
  border: 1px solid var(--border-lit);
  color: var(--text);
  padding: .65rem 1.25rem;
  border-radius: 100px;
  font-size: .85rem;
  font-weight: 500;
  z-index: 400;
  box-shadow: 0 12px 32px rgba(0,0,0,.4), 0 0 18px rgba(56,189,248,.22);
  opacity: 0;
  pointer-events: none;
  transition: opacity .25s ease, transform .25s ease;
  white-space: nowrap;
}
.toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* ===== MULTILINGUAL GREETING ===== */
.hero__greeting {
  display: inline-block;
  transition: opacity .35s ease;
}

/* ===== TILT PREP ===== */
.project-card, .skill-card {
  transform-style: preserve-3d;
  will-change: transform;
}

/* ===== MAGNETIC BUTTONS ===== */
.btn--primary, .nav__link.contact-cta { will-change: transform; }

/* ===== CONFETTI ===== */
.confetti {
  position: fixed;
  width: 8px; height: 14px;
  pointer-events: none;
  z-index: 500;
  border-radius: 2px;
  animation: confetti-fall var(--dur, 1.6s) cubic-bezier(.2,.5,.4,1) forwards;
  will-change: transform, opacity;
}
@keyframes confetti-fall {
  0%   { transform: translate(0, 0) rotate(0deg); opacity: 1; }
  100% { transform: translate(var(--tx, 0), var(--ty, 200px)) rotate(var(--rot, 720deg)); opacity: 0; }
}

/* ===== PARTY MODE (Konami) ===== */
body.party .hero__name,
body.party .section__title,
body.party .featured-project__title,
body.party .stat-card__num {
  background: linear-gradient(90deg, #ff6b6b, #ffd93d, #6bcf7f, #4d96ff, #c780ff, #ff6b6b);
  background-size: 300% 100%;
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: rainbow-flow 4s linear infinite;
}
@keyframes rainbow-flow {
  0%   { background-position: 0% 50%; }
  100% { background-position: 300% 50%; }
}
body.party .skill-card__icon,
body.party .beyond-card__emoji,
body.party .project-card__icon {
  animation: party-bounce 1.4s ease-in-out infinite;
  display: inline-block;
}
@keyframes party-bounce {
  0%, 100% { transform: translateY(0) rotate(-6deg); }
  50%      { transform: translateY(-8px) rotate(8deg); }
}

/* ===== EASTER EGGS ===== */
/* Hover hint on Beyond cards */
.beyond-card[data-easter] { cursor: pointer; user-select: none; }
.beyond-card[data-easter]::before {
  content: 'click me';
  position: absolute;
  top: .55rem; right: .85rem;
  font-size: .65rem;
  font-family: var(--mono);
  color: var(--accent);
  letter-spacing: .04em;
  opacity: 0;
  transform: translateY(-2px);
  transition: opacity var(--t), transform var(--t);
  z-index: 2;
}
.beyond-card[data-easter]:hover::before { opacity: .9; transform: translateY(0); }

/* Frisbee flight */
.flying-frisbee {
  position: fixed;
  z-index: 450;
  font-size: 2.4rem;
  pointer-events: none;
  will-change: transform, opacity;
  animation: frisbee-fly 1.8s cubic-bezier(.25,.4,.4,1) forwards;
}
@keyframes frisbee-fly {
  0%   { transform: translate(-50%, -50%) rotate(0deg)    scale(1);  opacity: 1; }
  50%  { transform: translate(calc(-50% + 40vw), calc(-50% - 140px)) rotate(720deg)  scale(.95); opacity: 1; }
  100% { transform: translate(calc(-50% + 92vw), calc(-50% + 40px))  rotate(1440deg) scale(.55); opacity: 0; }
}

/* Dice bounce-in toast */
.dice-roll {
  position: fixed;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%) scale(.3);
  z-index: 460;
  font-size: 5rem;
  pointer-events: none;
  filter: drop-shadow(0 0 24px rgba(56,189,248,.55));
  animation: dice-pop 1.6s cubic-bezier(.34,1.56,.64,1) forwards;
  will-change: transform, opacity;
}
@keyframes dice-pop {
  0%   { transform: translate(-50%, -50%) scale(.3) rotate(-180deg); opacity: 0; }
  30%  { transform: translate(-50%, -50%) scale(1.15) rotate(15deg); opacity: 1; }
  60%  { transform: translate(-50%, -50%) scale(1)    rotate(-5deg); opacity: 1; }
  100% { transform: translate(-50%, -50%) scale(.6)   rotate(0deg);  opacity: 0; }
}

/* Camera flash */
.camera-flash {
  position: fixed; inset: 0;
  background: #fff;
  pointer-events: none;
  z-index: 470;
  opacity: 0;
  animation: cam-flash .55s ease-out forwards;
}
@keyframes cam-flash {
  0%   { opacity: 0; }
  10%  { opacity: .85; }
  100% { opacity: 0; }
}

/* ===== REDUCED MOTION ===== */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
    scroll-behavior: auto !important;
  }
}

/* ============================================================
   ACCESSIBILITY BASELINE
   ============================================================ */

/* WCAG 2.4.7 — the UA default ring is invisible on this palette, and
   .btn { overflow: hidden } clips an inset one. outline-offset puts it
   outside the box so it survives. */
:where(a, button, [tabindex], summary):focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: var(--r-sm);
}

.visually-hidden {
  position: absolute !important;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0); clip-path: inset(50%);
  white-space: nowrap; border: 0;
}

/* WCAG 2.4.1 — 9 nav links x every navigation is a lot of tabbing on an
   11,000px page. Visible only once focused. */
.skip-link {
  position: absolute; left: 50%; top: 0;
  transform: translate(-50%, -120%);
  z-index: 500;
  background: var(--accent); color: #05080f;
  font-weight: 600; font-size: .88rem;
  padding: .7rem 1.2rem; border-radius: 0 0 var(--r-sm) var(--r-sm);
  transition: transform var(--t);
}
.skip-link:focus { transform: translate(-50%, 0); }

/* ============================================================
   DOCUMENT VIEWER (resume.html)
   Goal: the document is read here. Saving a copy is available
   but deliberately demoted — nobody should have to download a
   PDF to find out what it says.
   ============================================================ */
.doc-page { background: var(--bg); }

.doc-head {
  position: sticky; top: 0; z-index: 50;
  background: rgba(7, 11, 24, .82);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.doc-head__inner {
  max-width: 1000px; margin: 0 auto;
  padding: .9rem 1.5rem;
  display: flex; align-items: center; justify-content: space-between; gap: 1rem;
}
.doc-back {
  display: inline-flex; align-items: center; gap: .45rem;
  font-size: .85rem; color: var(--text-muted);
  transition: color var(--t);
}
.doc-back:hover { color: var(--accent); }
.doc-head__name {
  font-family: var(--mono); font-size: .78rem;
  letter-spacing: .12em; text-transform: uppercase; color: var(--text-dim);
}

.doc-wrap {
  max-width: 1000px; margin: 0 auto;
  padding: 3rem 1.5rem 5rem;
  display: flex; flex-direction: column; gap: 1.5rem;
}
.doc-title { font-size: clamp(1.7rem, 4vw, 2.3rem); font-weight: 700; line-height: 1.15; }
.doc-sub { color: var(--text-muted); margin-top: .5rem; max-width: 56ch; }

.doc-switch {
  display: inline-flex; gap: .35rem;
  padding: .35rem;
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--r); align-self: flex-start;
}
.doc-switch__btn {
  display: flex; flex-direction: column; gap: .15rem;
  padding: .6rem 1.1rem;
  border: 0; border-radius: var(--r-sm);
  background: transparent; color: var(--text-muted);
  font: 600 .9rem/1.2 var(--font); text-align: left; cursor: pointer;
  transition: background var(--t), color var(--t);
}
.doc-switch__btn:hover { color: var(--text); }
.doc-switch__btn.is-on { background: var(--bg-card-hi); color: var(--text); box-shadow: inset 0 0 0 1px var(--border-lit); }
.doc-switch__meta {
  font: 400 .68rem/1 var(--mono);
  letter-spacing: .06em; color: var(--text-dim);
}
.doc-switch__btn.is-on .doc-switch__meta { color: var(--accent); }

.doc-blurb { color: var(--text-muted); font-size: .92rem; margin-top: -.6rem; }
.doc-actions { display: flex; flex-wrap: wrap; gap: .6rem; }

.doc-view { border-radius: var(--r); }

/* Live embed — wide screens only */
.doc-frame {
  width: 100%; height: min(88vh, 1180px);
  border: 1px solid var(--border-lit);
  border-radius: var(--r);
  background: var(--bg-card);
  box-shadow: var(--shadow);
  display: block;
}

/* Preview card — the universal fallback */
.doc-preview {
  position: relative;
  border: 1px solid var(--border-lit);
  border-radius: var(--r);
  overflow: hidden;
  background: var(--bg-card);
  box-shadow: var(--shadow);
  max-height: 78vh;
}
.doc-preview img { display: block; width: 100%; height: auto; }
.doc-preview__veil {
  position: absolute; inset: auto 0 0 0;
  display: flex; justify-content: center;
  padding: 2.5rem 1rem 1.4rem;
  background: linear-gradient(to top, var(--bg) 30%, rgba(7,11,24,.85) 65%, transparent);
}

.doc-foot { color: var(--text-muted); font-size: .85rem; }
.doc-foot a { color: var(--accent); border-bottom: 1px solid transparent; }
.doc-foot a:hover { border-bottom-color: var(--accent); }

@media (max-width: 560px) {
  .doc-wrap { padding: 2rem 1.1rem 4rem; }
  .doc-switch { width: 100%; }
  .doc-switch__btn { flex: 1; align-items: center; text-align: center; }
  .doc-actions .btn { flex: 1 1 auto; justify-content: center; }
}